INORGANIC CHEMISTRY COMMUNICATIONS
·
2025
·
IF 5.4
Hui Bai,Runwen Xiong,Nan Wang,Mingxia Tian,Jianbo Zhao,Fengqin Tang,Jianhui Jiang
Environmental pollution, particularly from organic dye-laden wastewater, represents an escalating global challenge, necessitating the development of efficient and sustainable remediation strategies. Herein, we report the fabrication of a rare-earth element Yb-doped TiO 2 /g-C 3 N 5 (YTCN) heterostructured photocatalyst through hydrothermal synthesis and calcination, utilizing methylene blue (MB) and rhodamine B (RhB) as representative contaminants. The YTCN composite with an optimized mass ratio of 1:3 exhibited superior photocatalytic degradation efficiencies of 96.57 % for MB and 91.82 % for RhB with a decline rate of 0.02083 and 0.01832 min −1 under 500 W xenon lamp irradiation within 105 min, corresponding to 2.2-fold and 2.1-fold improvements over pristine TiO 2 , respectively. The Construction of YTCN significantly enhances photocatalytic efficiency by enhancing the separation of charge carriers, extending light absorption into the visible region, and improving overall catalytic activity. This performance enhancement is ascribed to the cooperative interactions among Yb, TiO 2 , and CN, which raise charge generation, division, and carriage dynamics of photoinduced electrons (e − ) and holes (h + ). Furthermore, the YTCN composite demonstrated excellent recyclability and structural stability, remained close to 90 % degradation efficiency after five consecutive cycles without notable crystal degradation. These results highlight the potential of YTCN heterostructures as low-cost and robust photocatalysts for advanced wastewater treatment applications.
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高影响因子
NEW JOURNAL OF CHEMISTRY
·
2025
·
IF 2.5
Tianying Peng,Wenyong Mei,Jin Zhang,Saiwen Liu
4-Aminophenol (4-AP), a crucial organic intermediate in the synthesis of acetaminophen, poses significant toxicity and potential environmental and health risks. Titanium dioxide@ titanium-based metal–organic frameworks (TiO2@Ti-MOFs) form a three-dimensional heterogeneous composite structure by covalently binding to the surface of 2D transition metal carbides and nitrides (MXenes). The synergistic effect between the porosity of titanium-based metal–organic frameworks (Ti-MOFs) and the layered structure of MXenes provides abundant adsorption sites, effectively enriching the target molecule 4-AP and enhancing the sensor's selectivity. The high conductivity of MXenes, combined with the semiconductor properties of TiO2@Ti-MOFs, accelerates electron transfer on the electrode surface, resulting in an increased response current and improved sensitivity and detection range. The detection range of the TiO2@Ti-MOF/MXene electrochemical sensor spans from 0.5 to 50 μM, with a detection limit of 0.16 μM. This sensor is effectively applicable for detecting 4-AP in real water samples, such as tap water and Qingshan Lake water, demonstrating satisfactory recovery.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Chun-Miao Zhang,Yun-Ze Qiu,Hao Wu,Jing Guan,Shu-Guang Wang,Xue-Fei Sun
Capacitive deionization (CDI) is flourishing as an energy-efficient and cost-effective water desalination method. However, challenges such as electrode degradation and fouling have hindered the practical deployment of CDI technology. To address these challenges, the key point of our strategy is applying a hydrophilic coating composed of polyethylene glycol (PEG)-functionalized nano-TiO 2 /polyvinylidene fluoride (PVDF) to the electrode interface (labeled as APPT electrode). The PEG/PVDF/TiO 2 layer not only mitigates the co-ion depletion, but also imparts the activated carbon (AC) electrode hydrophilicity. As anticipated, the APPT electrode possessed an enhanced desalination capacity of 83.54 μmol g −1 and a low energy consumption of 17.99 Wh m −3 in 10 mM sodium chloride solution compared with the bare AC electrode. Notably, the APPT maintained about 93.19 % of its desalination capacity after 50 consecutive adsorption–desorption cycles in the presence of bovine serum albumin (BSA). During the trial, moreover, no obvious overall performance decline was noted in concentration reduction (Δc), water recovery (WR) and productivity (P) over 50 cycles. This strategy realizes energy-efficient, antifouling and stable brackish water desalination and has great promise for practical applications.
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DOI
PubMed
高影响因子
JOURNAL OF DRUG DELIVERY SCIENCE AND TECHNOLOGY
·
2025
·
IF 4.9
Jiansong Chen,Hong Zheng,Shujian Zheng,Sen Zhang,Xiufeng Xiao,Shi Chen,Tao Zhang
Titanium-based implants are widely used due to their excellent mechanical properties and biocompatibility. However, post-implantation complications such as bacterial infections and insufficient bone integration remain challenges. This study focuses on the development of a near-infrared (NIR)--responsive drug delivery system based on TiO 2 nanotube arrays (TNTs) functionalized with black phosphorus composite hydrogels (BP@HCGG). The TNTs were fabricated via electrochemical anodization and aminated to enhance drug loading. Ibuprofen (IBU) was used as a model drug, and BP@HCGG was coated onto the TNTs to enable NIR-controlled release. The system demonstrated excellent photothermal properties, with rapid drug release under NIR light and minimal release in its absence. The phase transition temperature of BP@HCGG was optimized to ensure temperature-sensitive release at body temperature. Cell proliferation tests indicated good biocompatibility of the system. These results suggest that TNTs-NH 2 -IBU-BP@HCGG has significant potential for intelligent, NIR-controlled drug release, which can improve antimicrobial efficacy and promote bone integration in titanium-based implants.
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高影响因子
ACS Omega
·
2024
·
IF 3.7
Duy-Nam Phan,Thi Ngat Tran,Phuong-Linh Nguyen,Minh Thang Le,Azeem Ullah,Ick-Soo Kim
Cu-doping contents in the TiO2 lattice structure were studied to show the effects on the crystal structure, morphology, and photocatalytic activity of TiO2 nanoparticles and thus composite cellulosic nanofibrous membranes. Pristine and copper-doped TiO2 nanoparticles were synthesized using the sol–gel technique, a wet chemical method with the advantages of low synthesizing temperature, uniform nanosize distribution, and purity. The as-synthesized semiconductor nanoparticles were first tested with the dye removal process and then impregnated onto electrospun cellulose nanofibers (CL nanofibers) to acquire modified nanofibers with self-cleaning properties. The as-prepared composite CL nanofibers consisting of doped and undoped TiO2 nanoparticles were characterized by various techniques, such as field emission scanning electron microscopy, transmission electron microscopy, UV–vis, X-ray diffraction, Fourier transform infrared spectroscopy, and tensile tests. The copper-doped TiO2 molar ratio in the nanocomposite was found to possess a pronounced impact on the dye removal and self-cleaning effects under the visible light spectrum, whereas TiO2 is highly effective under specific UV-light irradiation. Optical measurements and dye decomposition showed that the Cu-doped TiO2 nanocomposite was optimized at a 1% molar ratio by the copper-doping concentration regarding dye removal and self-cleaning applications under the visible light range.
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PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2024
·
IF 4.9
Le Xu,Peng Guo,Jie Xu,Boxiong Shen,Zhong Zhao
TiO 2 has been widely studied in photocatalytic VOCs oxidation but its photocatalytic activity is still unsatisfied due to poor visible light absorption, serious charge recombination and weak toluene adsorption . Herein, a composite catalyst (TiO 2 /ZSM-5) was constructed between TiO 2 and hierarchical ZSM-5 by ball milling for photocatalytic toluene oxidation. The optimal composite catalyst exhibited the toluene degradation efficiency of 91.08 %, which was 2.7 and 1.3 times than those of TiO 2 and TiO 2 /commercial ZSM-5. It showed that the strong interaction between TiO 2 and hierarchical ZSM-5 was established via the formation of Ti-O-Si bond, which decreased the band gap from 3.08 to 0.55 eV when compared with TiO 2 and was helpful for the enhanced charge separation. In addition, the mesoporous volume of hierarchical ZSM-5 was regulated by a dual-template method, making the mesoporous volume increased from 0.23 to 0.38 cm −3 g −1 when compared with TiO 2 /commercial ZSM-5, which improved the toluene adsorption capacity from 0.12 to 0.16 cm −3 g −1 . DFT calculation further indicated that the energy barrier of toluene oxidation and ring-opening reaction was reduced in the presence of hierarchical ZSM-5. This work provided a new catalyst design method to improve the photocatalytic activity by the synergy action of TiO 2 and ZSM-5.
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ADVANCED FUNCTIONAL MATERIALS
·
2024
·
IF 18.5
Zengliang Ren,Li Lei,Linwei Zhu,Shuimiao Xia,Runhua Fan,Davoud Dastan,Hongzhi Cui,Zhicheng Shi
Polymer dielectrics have broad applications in advanced electronics and power systems. However, they suffer from low energy density and poor breakdown performance at high temperatures, limiting their applications in high-temperature environments. Herein, TiO 2 @Au@AlO x @Au nanofibers with double coulomb blockade nanolayers are obtained via a physical sputtering strategy to improve the high-temperature energy storage performance of polyetherimide composites. Experimental studies and finite elemenet phase-field simulations demonstrate that the double-layer coulomb blockade effect and micro-capacitor effect of Au nanoparticles synergistically enhance the breakdown strength and dielectric permittivity of polyetherimide composite at high temperatures. Notably, the composite exhibits ultra-high discharged energy densities of 11.33 and 9.70 J cm −3 at 150 and 200 °C, respectively, along with high charge–discharge efficiencies of 93.4% and 84%, which far exceed that of the polymer nanocomposites reported so far. Furthermore, the composite exhibits excellent charge–discharge cycling performance (>50000 cycles at 400 MV m −1 ) and high-power density (1.16 MW cm −3 ) at 200 °C, making it an ideal candidate for high-temperature capacitors. Hopefully, these nanofibers not only serve as excellent nanofillers for high-temperature energy storage dielectric composites but also holds tremendous potential and inspirational significance for other applications such as electronics, biomedical fields, optics, and catalysis.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Jing Liu,Yanqing Zhang,Jian Zheng,Weiwei Li,Fanrong Kong,Yating Yang,Na Lin,Jing Cao,Xiaolong Chen,Fang Wang,Wenying Zhou
Polymer nanocomposites combining large dielectric permittivity ( ε′ ) but low loss along with high breakdown strength ( E b ) have garnered significant attention in the fields of electronic devices and power systems. To concurrently accomplish these desirable performances in pristine graphite nanoplates (GNP)/poly(vinylidene fluoride, PVDF) composites, the GNP were initially encased by a layer of anatase-type titanium dioxide (TiO 2 ) shell, and then incorporated into PVDF to investigate the effect of TiO 2 interlayer on the dielectric properties of the nanocomposites, specifically in relation to the thickness of the TiO 2 shell and the nanofiller concentration. The TiO 2 shell acts as a barrier layer prohibiting the electronic percolating, thus significantly reducing the dielectric loss and leakage conductivity of the GNP@TiO 2 /PVDF. Moreover, it not only alleviates the strong dielectric mismatch between GNP and PVDF, which restrains local electric field distortion, but also introduces charge traps, raising the energy barrier height for captured charge detrapping and preventing the growth of electric trees and subsequently promoting the E b . For example, the PVDF with 20 wt% of GNP@TiO 2 exhibited good comprehensive dielectric performances: ε′ of 50.63, loss factor of 0.071 (100 Hz) and E b of 7.89 kV/mm. Additionally, tailoring the TiO 2 ’s thickness can simultaneously modulate the overall dielectric parameters in the GNP@TiO 2 /PVDF. Theoretical fitting of experimental data via Havriliak-Negami equation uncovers the underlying polarization mechanism and the interlayer’s impact on charge migration. This work provides an efficient method for developing and producing polymeric nanodielectrics that simultaneously incorporate increased E b with high ε′ but low loss for potential use in power devices and microelectronic devices.
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Journal of Materials Chemistry B
·
2013
·Vol. 1
·期 15
·2072-2077
·
IF 0
Jingjie Cui,Yakun Ge,Shaowei Chen,Hongshi Zhao,Hong Liu,Zhen Huang,Huaidong Jiang,Jing Chen
Nano-p–n junction heterostructures based on TiO2 nanobelts with enhanced (001) facets were produced by assembling p-type semiconductor NiO nanoparticles on n-type surface-coarsened TiO2 nanobelt surfaces. The heterostructures were then used as the sensing electrode for the electrochemical detection of anticancer drugs O6-benzylguanine (O6BG) and lung cancer cells. O6BG exhibited an irreversible diffusion-controlled electrochemical process with an oxidation peak clearly identified at +0.78 V. For lung cancer cells one oxidation peak was found at +1.1 V and two reduction peaks at +0.30, and +0.90 V. These voltammetric features disappeared when O6BG was added to the lung cancer cells, which was ascribed to the structural changes of the cell membranes caused by the anticancer drug. These results suggested that nano-p–n junction heterostructures based on TiO2 nanobelts might serve as promising candidates for biosensing applications of anticancer drugs and tumor cells that will be of significance in diagnostic medicine, cancer diagnosis and molecular biology research.
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PubMed
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2017
·
IF 9.446
Shengyan Pu,Rongxin Zhu,Hui Ma,Daili Deng,Xiangjun Pei,Fei Qi,Wei Chu
Photogenerated electron/hole recombination greatly limits the catalytic efficiency of TiO 2 , and recently modification with graphene substance has been regarded as an effective way to enhance the photocatalytic performance of TiO 2 . When referring to the fabrication of graphene based materials, the reduction process of graphene oxide has been demonstrated to be a key step. Therefore, it is highly required to develop an efficient and simple route for the GO reduction and the formation of TiO 2 @rGO composites. In this study, we have demonstrated a facile and environmentally friendly strategy for in-situ preparation of the TiO 2 @rGO “dyade” hybrid and systematically investigated the photodegradation efficiency of the resultant composite by utilizing rhodamine 6G as the model pollutant. The obtained TiO 2 @rGO has a significant enhancement in photo energy adsorption leading to the effective photocatalytic degradation reactions. The results indicated that the best performance was conducted by the TiO 2 @rGO (10 wt%, 120 min’s irradiation), which exhibited more than triple the higher photodegradation rate than commercial TiO 2 (P25) nanoparticles mainly due to two aspects, the rapid separation of h + / e − and to improve adsorption. This work provides new insight into the synthesis of TiO 2 @rGO composites as a high performance photocatalyst for the degradation of organic contaminant.
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高影响因子
Nanomaterials
·
2021
·Vol. 11
·期 3
·803
·
IF 5.076
Penghui Nie,Mengqi Wang,Yu Zhao,Shanji Liu,Ling Chen,Hengyi Xu
The potential toxicity of titanium dioxide nanoparticles (TiO2NPs) to mammals has become a widespread concern. Young individuals exposed to TiO2NPs have a higher risk than adults. In this study, the protective effects ofLactobacillus rhamnosusGG (LGG) on liver toxicity in young rats induced by TiO2NPs were explored. Results show that the four-week-old rats that underwent LGG after the oral intake of TiO2NPs could prevent weight loss, reduce hematological indicators (WBC and NEUT) and serum biochemical indicators (AST, ALT, AST/ALT, and ALP). Moreover, it alleviated the pathological damage of the liver (as indicated by the disordered hepatocytes, more eosinophilic, ballooning degeneration, and accompany with blood cells), but it did not reduce the Ti contents in the liver. In addition, RT-qPCR results indicated that LGG restored the expression of anti-oxidative stress-related genes, such asSOD1,SOD2,CAT,HO-1,GSH,GCLC, andGCLMin the liver. In summary, the hepatotoxicity of TiO2NPs in young rats is closely related to oxidative stress, and the antioxidant effect of LGG might protect the harmful effects caused by TiO2NPs.Keywords:titanium dioxide nanoparticles;Lactobacillus rhamnosusGG;liver;toxicity;oxidative stress
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高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2021
·
IF 7.963
Xilin Liao,Ting-Ting Li,Hai-Tao Ren,Xuefei Zhang,Baolei Shen,Jia-Horng Lin,Ching-Wen Lou
Water was the source of life, in order to solve the serious water pollution problem facing the world, researchers have proposed many solutions. Among them, photoelectric catalytic technology based on semiconductor materials was an ideal and sustainable solution. Herein, by combining successive ionic layer adsorption and reaction (SILAR) with sol-gel electrospinning two strategies, a novel S-scheme heterojunction based on flexible and hierarchical BiOI/TiO 2 nanofibrous membranes (BiOI/TiO 2 NFM) was fabricated. The degradation rates of tetracycline (TC) and Rhodamine B (RHB) were 98.7% and 95.6%, respectively, under visible light irradiation. The main reason, except for the benefits offered by the hierarchical nanofiber structure, such as the large surface area, tightly connected interfaces and more exposed active sites, other advantages derived from photogenerated carrier transfer and superior redox ability were also momentous. To reveal the formed S-scheme heterojunction, a variety of test methods were used to characterize and test. These studies showed a significant increase in charge separation efficiency in the BiOI/TiO 2 NFM, and the charge transport of S-scheme heterojunction was demonstrated. This study may offer new design ideas for the design and construction of novel structures of S-scheme heterojunctions.
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高影响因子
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